Hydration-dependent dynamics of deeply cooled water under strong confinement

Autor:	C. E. Bertrand, Sow-Hsin Chen, Kao-Hsiang Liu, Eugene Mamontov
Rok vydání:	2013
Předmět:	Materials science Chemical physics Dynamics (mechanics) Monolayer Relaxation (physics) Mesoporous silica Neutron scattering
Zdroj:	Physical Review E. 87
ISSN:	1550-2376 1539-3755
Popis:	We have measured the hydration-level dependence of the single-particle dynamics of water confined in the ordered mesoporous silica MCM-41. The dynamic crossover observed at full hydration is absent at monolayer hydration. The monolayer dynamics are significantly slower than those of water in a fully hydrated pore at ambient temperatures. At low temperatures, the opposite is found to be true. These results underscore the importance of water's tetrahedral hydrogen-bond network in accounting for its low temperature dynamic properties.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdd746d3ad06296e1591d53a7607c5f2 https://doi.org/10.1103/physreve.87.042312 Zobrazit plný text záznamu